Carrying Out The Fdo ® Check Procedure - wtw Oxi 3310 IDS Operating Manual

Oxi 3310 IDS (Oxi 3315)
®
FDO check proce-
dure
Stability control
(AutoRead)
ba75944e02 10/2014
5.2.3 Carrying out the FDO
Check in water vapor-saturated air.
Use the check and storage beaker (FDO ® Check) to carry out the FDO ®
check procedure.
®
In the FDO check procedure, the Stability control function (AutoRead) is auto-
matically activated.
Proceed as follows to carry out the FDO ® check procedure:
1. Connect the D.O. sensor to the meter.
2. Place the D.O. sensor in the check and storage beaker, FDO
The sponge in the check and storage beaker must be moist (not
wet). Leave the sensor in the check and storage beaker long
enough so it can
adapt to the ambient temperature.
®
3. Start the FDO
Check / Start FDO Check.
The meter switches to the measured parameter, %.
O
2
99.8
25.0
FDO Check
[t90= 30 s]
01.02.2014
4. Start the measurement with <ENTER>.
The measured value is checked for stability (stability control).
The [AR] status indicator is displayed. The measured parameter flashes.
5. Wait for the end of the AutoRead measurement ([HOLD][AR]) status indi-
cator or
take over the measured value with <ENTER>.
The measured value is frozen.
6. Switch to the measured value display with <M>.
The check measurement is not documented.
®
check procedure
check procedure in the measuring menu with FDO
%
°C
08:00
Dissolved oxygen
®
Check .
27